Personalized Christmas Cute Polar Bear Adult Sweatshirt. This is my Christmas pajama shirt design for the holidays with adorable polar bear and holly. Stay warm and stylish with this classic adult sweatshirt, perfect for everyday comfort. Crafted from soft, durable fabric, it features a relaxed fit for added coziness. Whether you’re lounging at home, running errands, or enjoying outdoor activities, this versatile sweatshirt is a wardrobe essential for any season.